To provide a space-saving apparatus for dehydrating sludge, in which sludge can be dehydrated stably and the amount of a polymer flocculant to be added can be reduced.
The apparatus 1 for dehydrating sludge is constituted so that a sludge supply part 18 of each of two rotary pressure filter type dehydration means 10, 10' constituting the apparatus 1 for dehydrating sludge is arranged on the side lower than the center of the rotation of a disk-shaped filter plate and in such a position that sludge is supplied into a dehydration chamber from the outer peripheral part of the dehydration chamber, a dehydrated cake discharge part is arranged on the side higher than the center of the rotation of the disk-shape filter plate and in such a position that the dehydrated cake in the dehydration chamber is discharged from the outer peripheral part of the dehydration chamber, and a flocculating/mixing tank 30 having an agitation unit for agitating sludge with the polymer flocculant is connected directly to a sludge inlet arranged under each of the sludge supply parts.
COPYRIGHT: (C)2008,JPO&INPIT
Takeo Yoshigae
Tomohiro Maruyama
Matsumoto Katsuo
Nobuyuki Tachimitsu
Hitoshi Kokue
Yasuhiro Miyamoto
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Takenaka Yoshimichi